{
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  "prepared_utc_date": "2026-10-05",
  "status": "source candidate ready; local source-delta validation passed; independent review/adoption deferred behind owner pre-trial scope",
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    "provider": "OpenStreetMap contributors",
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    "license": "ODbL-1.0",
    "license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
    "attribution": "© OpenStreetMap contributors",
    "attribution_url": "https://www.openstreetmap.org/copyright",
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    "units": "meter",
    "projection": "ECEF(WGS84, ellipsoidal h=0) then ENU; x/y on origin tangent plane. Retains metric geometry; no gameplay scaling."
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    "same_version_conflicts": 0,
    "existing_visibility_affected": 165
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  "preservation_contract": "This candidate is source-only, not a drop-in runtime registry. Preserve all authored live ledger entries by native ID. Append seed entries only for new IDs; regenerate render geometry and safety poses against new union. No existing record is removed or reset.",
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        "status": "validated",
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    "bus_source_stops": 217,
    "physical_bus_stops": 36,
    "route_ids": 54,
    "route_shapes": 111,
    "youbike_stations": 25,
    "report": "transit-coverage-impact.json",
    "official_raw_reacquired": false
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  "canonical_metro_reference_verified": {
    "url": "https://data.taipei/dataset/detail?id=cfa4778c-62c1-497b-b704-756231de348b",
    "title": "臺北捷運車站出入口座標",
    "download_url": "https://data.taipei/api/frontstage/tpeod/dataset/resource.download?rid=307a7f61-e302-4108-a817-877ccbfca7c1",
    "source_file_updated": "2026-08-04 14:28:37",
    "verified_utc_date": "2026-10-05"
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    "Local decimal precision is computational, not survey accuracy.",
    "POIs remain record-only unless independently reviewed; missing level/location does not imply street-level access.",
    "Heights and built widths remain unmeasured unless explicit source tags, and source tags themselves are not independent measurements.",
    "Geometries may extend beyond acquired area; clip display/route fragments to actual query union.",
    "No transit journey becomes playable solely because its raw source shape intersects the new coverage.",
    "Known incomplete source multipolygons are listed separately; no missing edges/vertices are guessed."
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      "resolution": "Unresolved source-anchor semantics; keep both source records, do not silently snap. Safe interaction pose needs separate review."
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}